A high-precision positioning device for curved surface products

Abstract

This invention discloses a high-precision fitting and positioning device for curved surface products, including a housing, a product contour positioning mechanism, a connecting rod push head mechanism, two connecting rod tension and compression mechanisms, and two stop mechanisms. The product contour positioning mechanism is fixed above the housing to support the main body of the product. The two connecting rod tension and compression mechanisms are located on the left and right sides inside the housing. Each connecting rod tension and compression mechanism includes a cam slider unit, a connecting rod unit, a contour positioning block, a silicone contour pad, and a silicone pressure rod. The product parts to be assembled are coarsely positioned by the contour positioning block, and then the cam slider unit pushes the connecting rod unit, causing the silicone pressure rod to press down, which compresses the contour silicone pad and expands outward, thereby achieving a seamless and precise fit between each product part. The stop mechanisms cooperate with the connecting rod tension and compression mechanisms. When the cam slider unit pushes the connecting rod unit into place, it locks the cam slider unit to achieve precise positioning. The connecting rod push head mechanism is located in the middle inside the housing to push out the assembled product.

Description

Technical Field

[0001] This invention relates to the field of non-standard automated assembly technology for 3C electronic products, and in particular to a high-precision fitting and positioning device for curved surface products. Background Technology

[0002] In today's 3C electronics industry—namely, computers, communications, and consumer electronics—some products feature streamlined curved surfaces. However, when assembling two curved components, misalignment can occur due to assembly tolerances, resulting in gaps at the joints. This can affect the user experience and product quality.

[0003] The common approach adopted in the industry is as follows:

[0004] 1. The product is assembled manually using its own mortise and tenon mechanism.

[0005] 2. Create a curved surface contour modeling vehicle to locate the product based on its shape.

[0006] The positioning of the product's mortise and tenon mechanism and the positioning of the curved surface contouring carrier can lead to large assembly deviations and a very high defect rate due to the differences in product size and the superposition of reserved gaps in the fit. At the same time, the manual operation is cumbersome and inefficient.

[0007] Therefore, those skilled in the art are dedicated to developing a high-precision positioning device for curved surface products to improve efficiency, reduce costs, and enhance product quality. Summary of the Invention

[0008] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to ensure a smooth transition without step differences at the joint of two curved surface components during assembly and positioning.

[0009] To achieve the above objectives, the present invention provides a high-precision fitting and positioning device for curved surface products, comprising a housing, a product contouring positioning mechanism, a linkage pusher mechanism, two linkage tensioning mechanisms, and two stop mechanisms; the product contouring positioning mechanism is fixed above the housing and configured to support the product body; the two linkage tensioning mechanisms are respectively disposed on the left and right sides inside the housing, each of the two linkage tensioning mechanisms including a cam slider unit, a linkage unit, a contouring positioning block, a silicone contouring pad, and a silicone pressure rod, and configured to guide each corresponding component of two product parts to be assembled through the contouring positioning mechanism. The positioning block achieves coarse positioning, and then the cam slider unit pushes the connecting rod unit, causing the silicone pressure rod to press down, so that the conformal silicone pad is squeezed and expands outward, thereby achieving a seamless and precise fit between each corresponding component of the two products; each of the two stop mechanisms cooperates with the corresponding connecting rod tension and compression mechanism, and when the cam slider unit pushes the connecting rod unit to its position, it locks the cam slider unit in place, so that each corresponding component of the two products achieves precise positioning; the connecting rod push head mechanism is located in the middle of the housing and is configured to push out the assembled product.

[0010] Furthermore, the housing includes a base plate, a front panel, two cam plates, and a rear plate. The two cam plates and the rear plate are vertically mounted on the base plate, and the front panel covers the upper ends of the two cam plates and the rear plate to form a box structure.

[0011] Furthermore, the cam slider unit includes a slanted slider, a cam connecting rod, a slanted slider handle, a cam follower, a slanted slider slide rail, and a spring; the slanted slider slide rail includes a slanted slider guide rail and a slanted slider slide table. The slanted slider guide rail is fixedly disposed longitudinally on the base plate and positioned between the corresponding cam upright plate and the rear upright plate. The slanted slider slide table is slidably disposed on the slanted slider guide rail. The slanted slider is fixed on the slanted slider slide table. The slanted slider handle is connected to the front end of the slanted slider and extends out of the corresponding cam upright plate. The spring is disposed between the slanted slider and the rear upright plate. The first end of the cam connecting rod is movable up and down in a slot opened on the cam upright plate. The second end of the cam connecting rod is pivotally connected to the cam follower. The cam follower is disposed facing the inclined surface on the slanted slider.

[0012] Furthermore, when the inclined slider handle drives the inclined slider forward, the inclined surface on the inclined slider pushes the cam connecting rod upward.

[0013] Furthermore, the linkage unit includes a linkage seat, a first linkage, and a second linkage. The linkage seat is fixed below the panel. The middle of the first linkage is pivotally connected to the linkage seat. One end of the first linkage faces the third end of the cam linkage. The other end of the first linkage is pivotally connected to one end of the second linkage. The other end of the second linkage is pivotally connected to the lower end of the silicone pressure rod. The lower end of the contour positioning block is fixed in the mounting hole opened on the product contour positioning mechanism and fitted onto the silicone pressure rod. The silicone pressure rod is slidably disposed in the through hole opened on the contour positioning block. The contour silicone pad is disposed between the upper end of the contour positioning block and the other end of the silicone pressure rod.

[0014] Furthermore, a limit screw is also provided above the end of the panel facing the first connecting rod.

[0015] Furthermore, the stopping mechanism includes a stopping block, a return spring, a stopping handle, a stopping link, a stopping link block, and a stopping link shaft. The stopping link block is fixed below the panel. The stopping link is pivotally connected to the stopping link block via the stopping link shaft. The upper end of the stopping link extends through the panel and connects to the stopping handle. The stopping block is slidably disposed within a through hole in the stopping link block. The lower end of the stopping block faces the inclined slider. The upper end of the stopping block is connected to the panel via the return spring. A slot is provided in the middle of the stopping block to allow the other end of the stopping link to enter.

[0016] Furthermore, when the inclined slider is pushed forward, the stop block is lifted by the inclined surface of the inclined slider. When the inclined slider is pushed into place, the return spring pushes the stop block out, blocking the inclined slider and keeping it in position. When the stop handle is pulled forward, the stop block is pushed upward by the stop linkage. At this time, the inclined slider is reset backward by the force of the spring.

[0017] Furthermore, the linkage pusher mechanism includes a pivot seat, a slide rail seat, a product pusher, a pusher slide rail, a cam lever, a head bearing, and a tension spring. The pivot seat and slide rail seat are mounted on the base plate. The pusher slide rail includes a pusher guide rail and a pusher slider. The pusher guide rail is fixedly mounted on the slide rail seat. The pusher slide is slidably mounted on the pusher guide rail. The product pusher includes a sliding part and a pusher body. The sliding part is fixed on the pusher slide. The pusher body is connected to the upper end of the sliding part, extends through the product contouring positioning mechanism, and faces the product. The middle of the sliding part is connected to the base plate via the tension spring. The middle of the cam lever is pivotally connected to the pivot seat via a pivot shaft. The front end of the cam lever is pivotally connected to the head bearing. The head bearing faces the bottom end of the sliding part.

[0018] Furthermore, when the rear end of the cam skid is pressed down, the head bearing pushes the product pusher upward, pushing the assembled product out of the product contour positioning mechanism.

[0019] The advantages of this invention are: by using a curved, contoured silicone pad that diffuses outward under pressure, two product components can be positioned with zero gap, achieving a precise, stepless fit; it can significantly reduce the product defect rate and improve product quality; it is simple to operate, saves manpower, and has a simple mechanism, thus saving costs.

[0020] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the principle of using a contoured silicone pad to precisely position product components according to a preferred embodiment of the present invention.

[0022] Figure 2 This is an overall structural diagram of a high-precision positioning device for curved surface products according to a preferred embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the linkage tension and compression mechanism according to a preferred embodiment of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of a linkage tension / compression mechanism according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the stop mechanism in the locked state according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view of the stop mechanism of a preferred embodiment of the present invention after locking;

[0027] Figure 7 This is a schematic diagram of the stop mechanism in the reset state according to a preferred embodiment of the present invention;

[0028] Figure 8 This is a cross-sectional view of the stop mechanism of a preferred embodiment of the present invention after it has been reset;

[0029] Figure 9 This is a schematic diagram of the pusher mechanism of a preferred embodiment of the present invention.

[0030] Among them, 10-product contour positioning mechanism, 11-contour silicone pad, 12-contour positioning block, 13-silicone pressure rod, 21-panel, 22-cam upright plate, 23-base plate, 30-linkage tension and compression mechanism, 31-first link, 32-second link, 33-linkage seat, 34-slanted slider, 35-cam link, 36-slanted slider handle, 37-cam follower, 38-slanted slider slide rail, 39-spring, 40-stopping mechanism, 41-stopping block, 42-reset spring, 43-stopping handle, 44-stopping link, 45-stopping link block, 46-stopping link shaft, 50-linkage push head mechanism, 51-rotating shaft seat, 52-slide rail seat, 53-product push head, 54-push head slide rail, 55-cam pry plate, 56-head bearing, 57-tension spring. Detailed Implementation

[0031] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0032] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0033] Example 1

[0034] The device in this embodiment is used to assemble the left and right earpieces of a smart Bluetooth earphone case. The two parts are positioned and fitted with the earphone case by the device in this embodiment, and then the two parts are assembled by applying glue.

[0035] like Figure 1 As shown, the core design technology of this embodiment is to design a contoured silicone pad 11 at the assembly joint. During assembly, pressure is applied to the contoured silicone pad 11 to make the silicone expand outward evenly.

[0036] The two product components to be assembled fit onto the contour positioning block 12. The silicone contour pad 11 just covers the joint between the two product components. When a downward pulling force F is applied, the silicone pressure rod 13 causes the contour silicone pad 11 to be squeezed and expand outward, so that the two product components achieve a seamless and precise fit.

[0037] Preferably, the silicone pressure bar 13 is made of stainless steel, which can provide sufficient strength and pressure.

[0038] like Figure 2 As shown, this embodiment provides a high-precision mating and positioning device for curved surface products, including: a panel 21, a cam plate 22, a base plate 23, a rear plate, a product contour positioning mechanism 10, a stop mechanism 40, a connecting rod tension and compression mechanism 30, and a connecting rod push head mechanism 50.

[0039] like Figure 3 and Figure 4 As shown, the linkage tension and compression mechanism 30 consists of a cam slider unit and a linkage unit. The first end of the cam linkage 35 can move up and down in the slot on the cam plate 22. The second end of the cam linkage 35 is provided with a cam follower 37. A linkage seat 33 is fixed below the panel 21. The middle of the first linkage 31 is connected to the linkage seat 33 through a rotating shaft. One end of the first linkage 33 faces the third end of the cam linkage 35. When the inclined slider handle 36 drives the inclined slider 34 to push inward, the inclined surface pushes the cam linkage 35 upward. The first end of the cam linkage 35 moves upward in the slot on the cam plate 22. Through the transmission of the cam linkage 35, the first linkage 31, and the second linkage 32, the silicone pressure rod 13 is pressed downward, causing the conformal silicone pad 11 to be squeezed and expanded outward.

[0040] Preferably, a limiting screw is also provided above one end of the first connecting rod 31 and between the panel 21, and the limiting screw can adjust the deformation of the silicone contour pad 11.

[0041] like Figure 5 As shown in –6, when the inclined slider 34 is pushed into place, the stop block 41 of the stop mechanism 40 extends downward and locks the inclined slider 34.

[0042] The stop mechanism 40 is connected to the panel 21. When the inclined slider 34 is pushed forward, the stop block 41 is lifted by the inclined surface. When the inclined slider 34 is pushed into place, the return spring 42 pushes out the stop block 41, blocking the inclined slider 34 and keeping it in position.

[0043] like Figure 7 As shown in –8, when the stop handle 43 is moved to the right, the stop block 41 is pushed upward through the stop linkage 44. At this time, the inclined slider 34 will be reset to the left by the force of the spring 39.

[0044] Linkage pusher mechanism 50 Figure 9 As shown:

[0045] The base plate 23 is connected to the pivot seat 51 and the slide rail seat 52. The product push head 53 is connected to the slide rail seat 52 through the push head slide rail 54 to achieve up and down sliding.

[0046] The cam skid 55 is connected to the shaft seat 51 via a rotating shaft, and the front end is connected to the head bearing 56.

[0047] Press down the cam skid plate 55, and the head bearing 56 pushes the product push head 53 upward, pushing the assembled product out of the product contour positioning mechanism 10.

[0048] The product push head 53 is connected to the base plate 23 by a tension spring 57, which enables the product push head 53 to be reset.

[0049] Example 2

[0050] This embodiment provides a method for using a high-precision positioning device for curved surface products, and its operation flow is as follows:

[0051] 1. Place the main body of the product on the product contour positioning mechanism 10, and then assemble the two product parts onto the main body (coarsely positioned by the two contour positioning blocks 12).

[0052] 2. Press the two inclined slider handles 36 inward, and through the internal connecting rod tensioning mechanism 30, the conformal silicone pad 11 is compressed and expands outward, thereby achieving precise positioning of the two product components.

[0053] 3. After the product parts are shaped by dispensing glue, the cam pry plate 55 of the connecting rod push head mechanism 50 is pressed down, and the product push head 53 moves upward to push the product out, making it easy to remove the product.

[0054] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-precision positioning device for curved surface products, characterized in that, The device includes a housing, a product contouring and positioning mechanism, a linkage pusher mechanism, two linkage tension and compression mechanisms, and two stop mechanisms. The product contouring and positioning mechanism is fixed above the housing and configured to support the main body of the product. The two linkage tension and compression mechanisms are respectively located on the left and right sides inside the housing. Each of the two linkage tension and compression mechanisms includes a cam slider unit, a linkage unit, a contouring positioning block, a contouring silicone pad, and a silicone pressure rod. It is configured to coarsely position each corresponding product component to be assembled using the contouring positioning block, and then push the linkage unit through the cam slider unit, causing the silicone pressure rod to press down, thus compressing and expanding the contouring silicone pad outwards, thereby achieving a seamless and precise fit between the corresponding product components. Each of the two stop mechanisms cooperates with the corresponding linkage tension and compression mechanism. When the cam slider unit pushes the linkage unit into position, it locks the cam slider unit in place, ensuring precise positioning of each corresponding product component. The linkage pusher mechanism is located in the middle inside the housing and is configured to push out the assembled product.

2. The high-precision positioning device for curved surface products as described in claim 1, characterized in that, The housing includes a bottom plate, a front panel, two cam plates and a rear plate. The two cam plates and the rear plate are vertically mounted on the bottom plate, and the front panel covers the upper ends of the two cam plates and the rear plate to form a box structure.

3. The high-precision positioning device for curved surface products as described in claim 2, characterized in that, The cam slider unit includes a slanted slider, a cam connecting rod, a slanted slider handle, a cam follower, a slanted slider slide rail, and a spring. The slanted slider slide rail includes a slanted slider guide rail and a slanted slider slide table. The slanted slider guide rail is fixedly mounted longitudinally on the base plate and positioned between the corresponding cam upright plate and the rear upright plate. The slanted slider slide table is slidably mounted on the slanted slider guide rail. The slanted slider is fixed on the slanted slider slide table. The slanted slider handle is connected to the front end of the slanted slider and extends out of the corresponding cam upright plate. The spring is located between the slanted slider and the rear upright plate. The first end of the cam connecting rod is movable up and down in a slot on the cam upright plate. The second end of the cam connecting rod is pivotally connected to the cam follower. The cam follower is positioned facing the inclined surface on the slanted slider.

4. The high-precision positioning device for curved surface products as described in claim 3, characterized in that, When the inclined slider handle moves the inclined slider forward, the inclined surface on the inclined slider pushes the cam connecting rod upward.

5. The high-precision positioning device for curved surface products as described in claim 3, characterized in that, The linkage unit includes a linkage seat, a first linkage, and a second linkage. The linkage seat is fixed below the panel. The middle of the first linkage is pivotally connected to the linkage seat. One end of the first linkage faces the third end of the cam linkage. The other end of the first linkage is pivotally connected to one end of the second linkage. The other end of the second linkage is pivotally connected to the lower end of the silicone pressure rod. The lower end of the contour positioning block is fixed in the mounting hole on the product contour positioning mechanism and fits onto the silicone pressure rod. The silicone pressure rod is slidably disposed in the through hole on the contour positioning block. The contour silicone pad is disposed between the upper end of the contour positioning block and the other end of the silicone pressure rod.

6. The high-precision positioning device for curved surface products as described in claim 5, characterized in that, A limit screw is also provided above the end of the panel facing the first connecting rod.

7. The high-precision positioning device for curved surface products as described in claim 5, characterized in that, The stopping mechanism includes a stopping block, a return spring, a stopping handle, a stopping link, a stopping link block, and a stopping link shaft. The stopping link block is fixed below the panel. The stopping link is pivotally connected to the stopping link block via the stopping link shaft. The upper end of the stopping link extends through the panel and connects to the stopping handle. The stopping block is slidably disposed within a through hole in the stopping link block. The lower end of the stopping block faces the inclined slider. The upper end of the stopping block is connected to the panel via the return spring. A slot is provided in the middle of the stopping block to allow the other end of the stopping link to enter.

8. The high-precision positioning device for curved surface products as described in claim 7, characterized in that, When the inclined slider is pushed forward, the stop block is lifted by the inclined surface of the inclined slider. When the inclined slider is pushed into place, the return spring pushes the stop block out, blocking the inclined slider and keeping it in position. When the stop handle is pulled forward, the stop block is pushed upward by the stop linkage. At this time, the inclined slider is reset backward by the force of the spring.

9. The high-precision positioning device for curved surface products as described in claim 2, characterized in that, The linkage pusher mechanism includes a pivot seat, a slide rail seat, a product pusher, a pusher slide rail, a cam skid, a head bearing, and a tension spring. The pivot seat and slide rail seat are mounted on the base plate. The pusher slide rail includes a pusher guide rail and a pusher slide table. The pusher guide rail is fixedly mounted on the slide rail seat, and the pusher slide table is slidably mounted on the pusher guide rail. The product pusher includes a sliding part and a pusher body. The sliding part is fixed on the pusher slide table, and the pusher body is connected to the upper end of the sliding part, extending through the product contouring positioning mechanism and facing the product. The middle of the sliding part is connected to the base plate via the tension spring. The middle of the cam skid is pivotally connected to the pivot seat via a pivot shaft, and the front end of the cam skid is pivotally connected to the head bearing. The head bearing faces the bottom end of the sliding part.

10. The high-precision positioning device for curved surface products as described in claim 9, characterized in that, When the rear end of the cam skid is pressed down, the head bearing pushes the product pusher upward, pushing the assembled product out of the product contour positioning mechanism.

Images